1155487188 has 12 divisors (see below), whose sum is σ = 2696136800. Its totient is φ = 385162392.

The previous prime is 1155487129. The next prime is 1155487199. The reversal of 1155487188 is 8817845511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48145288 + ... + 48145311.

Almost surely, 2^1155487188 is an apocalyptic number.

It is an amenable number.

1155487188 is an abundant number, since it is smaller than the sum of its proper divisors (1540649612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1155487188 is a wasteful number, since it uses less digits than its factorization.

1155487188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96290606 (or 96290604 counting only the distinct ones).

The product of its digits is 358400, while the sum is 48.

The square root of 1155487188 is about 33992.4578105203. The cubic root of 1155487188 is about 1049.3532488787.

The spelling of 1155487188 in words is "one billion, one hundred fifty-five million, four hundred eighty-seven thousand, one hundred eighty-eight".